external/sql/storm-sql-runtime/src/jvm/org/apache/storm/sql/runtime/AbstractChannelHandler.java

/*
 * *
 *  * Licensed to the Apache Software Foundation (ASF) under one
 *  * or more contributor license agreements.  See the NOTICE file
 *  * distributed with this work for additional information
 *  * regarding copyright ownership.  The ASF licenses this file
 *  * to you under the Apache License, Version 2.0 (the
 *  * "License"); you may not use this file except in compliance
 *  * with the License.  You may obtain a copy of the License at
 *  * <p>
 *  * http://www.apache.org/licenses/LICENSE-2.0
 *  * <p>
 *  * Unless required by applicable law or agreed to in writing, software
 *  * distributed under the License is distributed on an "AS IS" BASIS,
 *  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  * See the License for the specific language governing permissions and
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package org.apache.storm.sql.runtime;

import backtype.storm.tuple.Values;

public abstract class AbstractChannelHandler implements ChannelHandler {
  @Override
  public abstract void dataReceived(ChannelContext ctx, Values data);

  @Override
  public void channelInactive(ChannelContext ctx) {

  }

  @Override
  public void exceptionCaught(Throwable cause) {

  }

  public static final AbstractChannelHandler PASS_THROUGH = new AbstractChannelHandler() {
    @Override
    public void dataReceived(ChannelContext ctx, Values data) {
      ctx.emit(data);
    }
  };
}